Vertically-slidable inwardly-swinging window



May 17, 1927.

J. G. KRAMER VERTICALLY SLJ IDABLE INWARDLY SWiNGING WINDOW I5 Sheets-Sheet 1 Fil ed Sept. 29, 1926 ATTORNEY.

May 17, 1927.

J. G. KRAMER VERTICALLY SLIDABLE INWARDLY SWINGING WINDOW Filed Sept. 29, 1926 3 Sheets-Sheet 2 1 VENTOR.

ATTORNEY.

1 ay J. G. KRAMER VERTICALLY SLIDABLE INWARDLY SWINGING WINDOW Filed Sept: 29 1926 s Sheets-Sheet s I N VEN TOR.

A TTORNE Y.

Patented May 17, 1927.

UNITED STATES PATENT OFFICE.

JOHN G. KRAMER, 0F DETROIT, MICHIGAN, ASSIGNQR TO CARNAHAN-BYRNE MA- CHINERY COMPANY, INC., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

VERTICALLY-SLIDABLE INWARDLY-SWINGING WINDOW.

Application filed September 29, 1926.

My invention relates to an attachment for vertically slidable window sashes whereby the sash may be swung inwardly for cleaning the outer face of the glass or inclined for ventilating purposes, as shown in the accompanying drawings and more particularly described in the following specification and claims.

The problem of cleaning windows in large ofiice and apartment buildings is one involving considerable annual expense due to the time required and hazardous nature of the work.

The primary object of the present invention therefore is to provide means whereby vertically movable window sash may be quickly and readily cleaned from the inside of the building, thereby greatly reducing the risk incurred by the party cleaning the windows and the time required to do the work.

In carrying out my invention, channel members are provided adapted to slide be tween the parting strip and the usual window stop strip. These channel members are fitted with hooks to which the usual supporting sash cord and weights are connected. Pivoted to the lower end of the channel members and secured to the side edges of the sash frame are metallic strips co-ordinating with the channel members,--suitable engaging latches being provided to secure the metallic strips at the edge of the sash in alignment with the channel members, whereby the window may be raised or lowered in the usual way, but upon the release of the engaging latches the window may be swung inwardl to a horizontal position for the purpose 0 cleaning the outer face of the glass, and if required, the pins may be withdrawn and the sash removed for repairs or other purposes.

Another feature of the present invention consists in a locking catch secured to the window frame which is automatically engaged by a spring actuated pin carried by the slidablc channel members ;-thus the channel members are held against vertical movement upon swinging the sash out of alignment therewith.

The spring actuated pin carried by the channel members co-ordinating with the locking catch secured to the window frame,

automatically serves to draw the channel members toward the window casing, there- Serial No. 138,382.

by overcoming any tendency of the channel members to swing toward each other and thus interfere with the return of the sash to its initial vertical position between the channel members.

With the foregoing and other objects in view which will appear as the description proceeds, the invention further resides in the details of construction hereinafter described and claimed it being understood that changes may be made in the precise embodiment of the invention herein disclosed without departing from the spirit of the same.

In the drawings accompanying the speciiicationz Figure l is a perspective view-with parts broken away and in section--showin the lower sash frame supported horizontall y between a pair of vertically slidable channel members to which the sash is pivoted, and also a spring actuated latch pin carried by the channel members engaging a cooperating catch plate-indicated in dotted linessecured to the window casing for holding the channel members in position to receive the sash when returned to its initial vertical position.

Figure 2 is an enlarged detail cross-sectional view through the window casing and one of the side bars of the sash frame-taken on or about line 22 of Figure 1the sash however being in alignment with the window casingand not as indicated in Figure 1the spring actuated pin carried by the channel member being released from the locking latch secured to the window frame that the channel member may be liberated for vertical movement.

Figure 3 is a similar cross-sectional view through the window casing and channel member showing the sprin actuated pin carried by the channel member engaged by the locking catch secured to the window frame, as when the sash is lowered to a horizontal position for cleaning-see Figure 1.

Figure 4 is a fragmentary elevation of the lower or pivotal end of the metallic strip secured to the sash frame,a portion of the latter being indicated in section. v

Figure 5 is a fragmentary vertical sectional View taken on or about line 55 of Figure 4, showing the spring actuated pivot pin carried by the channel member project mg through an aperture in the metallic strip secured to the sash frame.

Figure 6 is a perspective view of the locking latch secured to the window frame.

Figure 7 is a fragmentary perspective view of a portion of the window casm and.

its spaced stop and parting strips wit one of the vertically slidable channel members lodged between the spaced stripsa portion of the channel member being broken away to disclose a spring actuated pin carried by the channel engaging the locking catch secured to a window frame-showing also the metallic strip secured to the edge of the ,sash frame tilted, as when swinging the sash to a horizontal position.

operating metallic strip secured to the window sash and a swinging latch pivoted to the channel member engaging the strip secured to the sash for locking the sash in ali nment with the channel member.

eferring now to the letters of reference placed upon the drawings:

A denotes a sash frame-to the side members of which are secured metallic strips B- ribbed as at B*'*- on the face adjacent the edge of the sash to stiifen the strip and to form channels B between the ribs. 0-0 are vertically movable channel members lodged between the parting strip D and the stop strip E, secured to the stile: F of the window casing: The metallic strips B are detachably pivoted at their lower ends upon a pair of pins G projecting through apertures in the walls of the vertically movable channel members and the metalllc strips secured to the sash .frame. G is a spring secured at g to the channel member, its lower end bearing upon the end of the pin G, which is recessed to receive the end of the sprin and to secure the pin against rotation. --H are bracketfixtures attached to the wall of the channel C, provided at their u per ends with hooks H to receive the ends 0 the usual sash cord 1, connected with sash weights-mot shown-for counterbalancing the window.

" Secured to the bracket H is a spring J fitted at its lower end with a pin J extending through an arc-shaped slot in the wall of the channel member. The pin J a has an enlarged head J", and upon swinging the sash to a horizontal posit1on as indicated in- Figure 1,is engaged by the locking latch K-see- Figure 6-the inclined walls KF-K drawing the heads of the pins respectively toward the window casing, thereby overcoming any tendency of the channel members to sag away from the window stile and thus interfere with the sash returning to its initial position between the channels-following the cleaning of the window,the heads of the pins being forced by theinclined walls 10-- K toward the stile-see Figure 3.

The channel members (3-0 are each provided on their outer faces with an overlapping flange O spaced from the body portion forming a groove 0 to receive the marginal edge B of the strips B when aligned with the vertically movable channel members. L indicates a swinging latch pivoted to the wall of the channel members provided with a depending tongue L adapted to enter oneof the channels B at the back of the strips B to lock the sash when aligned with the channel members-see Figures 1 and 9. M-M designate chains provided with hooks M at each end to respectively engage the bars B-B and channel members C-C to support the sash in a horizontal position. By providing a relatively short chain or her having hooks at each end the sash may be tilted at any angle desired for purposes of ventilation.

N denotes a metallic Weatherstrip secured to the sill adapted to enter a slot-not shown provided in the lower edge of the sash.

When it is desired to turn the sash horizontally-as shown in Figure 1-it must be raised sufiiciently to clear the Weatherstrip N before swinging it into the position indicated.,

It will be understood that the co-ordinating members of the upper sash are similar to those of the lower sash and therefore it is not considered necessary to duplicate either the drawings or description of the same in the specification to convey a complete understanding of the invention.

Having indicated the several parts by reference letters the operation of the device will be readily understood.

The sash when in normal position is in alignment withthe vertically slidable channel members CC and is secured thereto by latches L pivoted to the channel members having tongues entering the grooves in the swilpgingrstrips B secured to the edges of the sas \Vhen it is desired to turn the sash for cleaning the outer face of the lass, the latches L are released that the sas 1 may be swung into a horizontal position. Short chains M with hooks at each end are then inserted in holes provided in the strips B and in the channel members. Upon the sash swinging to .a horizontal position -the sprin s J mounted upon brackets riveted to the ciannel members-force the pins J" at their lower ends into engagement with the locking latches K, secured to the stiles of the window frame. The channel members C-C are thus held against the lifting action of the sash weights attached by cords to the channel members. The inclined walls of the locking latches co-operating with the heads of the ins J maintain the channel members ad acent to the stiles that the sash may readil return to its initial position between said 0 annel members without interference caused by the latter sagging into the path of the sash.

The sash being 'in a horizontal position see Figure 1--the glass may be readily cleaned and when returned to its initial po sition between the channel members, a notch B in the edge of the members B.-B receives. the projecting ends of the pins J,' and the sash returning forces the pins out of engagement with the locking latch. The sash when aligned with the channel members may be locked thereto by the manual operation of the latches L, and may be vertically raised or lowered, as required.

If it should become necessary to remove the sash entirely from the channel members for repairs or other purposes, it is first lowered and swung to a horizontal positionsce Figure 1. The pivot pins G supported in the channel members and projecting through apertures in the strips B are then forced backwardly against the urge of the springs G out of engagement with the strips B,- the sash may then be withdrawn from between the channel members. U on returning the sash to its normal position between the channels, the pins G again enter the apertures in the strips B under the urge of the springs G when in proper registration.

To provide against the pins G turning in the apertures of the respective channel members, or in the strips attached to the sash frame, the head of the pins are recessed to receive the squared end of the springs G, bearing thereon see Figure 2.

Having thus described my invention what I claim is:

1. In a device of the class described, a pair of vertical] movable channel members; a vertically sli able sash; a pair of metal strips secured to the edges of the sash respectively provided with an aperture at the lower end to receive the ends of pivot pins supported in the walls of the channel members; springs secured to the channel members adapted to bear upon the pivot pins to yieldingly maintain them in engagement with the strips secured to the sash, whereby the sash may be removed upon manually forcing the pins out of engagement with the strips attached to the sash.

2. In a device of the class described, a pair of vertically movable channel members provided adjacent their lower ends with horizontally movable pivot pins; a. vertically adjustable sash provided at its side edges with metal strips having apertures at their lower ends to receive the movable pivot pins carried by the channel members, said metal strips having also longitudinally extending ribs adapted to stiffen the strips and provide grooves between the ribs; swinging latches pivoted to the upper end of the channel members having depending lips adapted to enter the grooves between the ribs of the metal strips secured to the sash, whereby the rash may be held in alignment with the channel members for vertical adjustment.

7 3. In a device of the class described, a pair of vertically movable channel strips; yieldable pivot pins at the lower ends of the channel strips; a vertically movable sash; metal strips secured to the edges of the sash, having recesses at their lower endsto receive the ends of the yieldable pivotpins of the channel members, whereby the sash may be swung inwardly from its normal position in alignment with channel members toclcan the outer face of the glass; a pair of locking latches secured to the stile of the window casing; a pair of spring actuated pins respectively supported by brackets secured to the channel members adapted to coordinate with the latches to secure the channel members against vertical movement, said pins projecting through elongated arcshaped slots in the walls of the channel members into the path of the swinging sasli, whereby they may be engaged by the edge of the strips secured to the sash upon swinging the latter from an inclined position into alignment with the channel members, thereby automatically releasing the channel members for vertical movement;

4. In a device of the class described, a pair of vertically movable channel members; a sash pivoted to the channel members adapted to swin inwardly therefrom; means for automatica ly locking the channel membersagainst upward movement and from sagging into the vertical path of the sash when the sash is swun inwardly from the channel members, sai channel locking means being automatically released by the sash when the latter is returned into normal alignment with the channel members for vertical movement in the window casing.

5. In a device of the class described, a pair of vertically movable channel members; a sash pivoted to the channel members adapted to swing inwardly therefrom; means for automatically locking the channel members against upward movement when the sash is swung inwardly, said means comprising a pair of locking latch members secured to the stiles of the window casing having spaced walls inclined toward the stile; and a co-acting pair of spring actuated pins supported within the channel members, adapted to automatically engage the locking latch mcmbers when the sash is swung inwardly from the channel members, thereby securing the latter against vertical movement, one end of the pins projectin throu h elongated slots in the channelwal into t e path of the swinging sash, whereby the sash upon being returned to vertical alignment with the channel members may automatical- 1y shift said pins to release the channel members, said spring actuated plns having a head at their inner ends adapted to be engaged by the inclined walls of the locking latch, whereby the channel members are secured against sagging.

6. In a device of the class described, a pair of vertically movable channel members; metallic strips pivoted to the channel members and secured to the edges of the sash frame having longitudinal grooves on their inner face adjacent the edge of the sash; swinging latches pivoted to the channel members provided with lips at their free ends adapted to project into the moves in the meta strips, whereby the sasi may be held in alignment with the channel members 2 and the channel members in intimate contact with the strips secured to the edges of the sash.

7. In a device of the class described, a pair of vertically movable channel members; a

sash; a pair of metallic strips secured to the edges of the sash with an aperture at their lower ends to receive horizontally projecting pivot pins movably supported in the, channel walls; springs engaging said pins' to yieldably retain them in the apertures of the sash strips until manually ejected; and means for locking the sash in alignment with the channel members.

In testimony whereof, I sign this speci- 40 fication.

JOHN G. KRAMER. 

